Home / 14,990.94-20,687.38-8,276.56

Finding the Fourth Proportional to 14,990.94, 20,687.38 and 8,276.56

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Solution

The fourth proportional to 14,990.94, 20,687.38 and 8,276.56 is: 11,421.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,990.94 : 20,687.38 = 8,276.56 : x
  2. Step 2: Convert to fraction form
    14,990.94/20,687.38 = 8,276.56/x
  3. Step 3: Cross multiply
    14,990.94x = 20,687.38 × 8,276.56
  4. Step 4: Simplify right side
    14,990.94x = 171,220,341.81
  5. Step 5: Solve for x
    x = 171,220,341.81/14,990.94
  6. Step 6: Final answer
    x = 11,421.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.